1
.
When
____________________
____________________
____________________
(
he
/
to
work
)
there
?
2
.
They
____________________
____________________
(
to
study
)
all
night
.
3
.
He
____________________
____________________
____________________
(
not
to
exercise
)
enough
.
4
.
____________________
____________________
____________________
(
I
/
to
talk
)
too
much
?
5
.
It
____________________
____________________
(
to
snow
)
on
Christmas
Eve
.
6
.
They
____________________
____________________
____________________
(
not
to
talk
)
.
7
.
Why
____________________
____________________
____________________
(
you
/
to
study
)
on
a
Saturday
night
?
8
.
You
____________________
____________________
____________________
(
not
to
sleep
)
.
9
.
I
____________________
____________________
____________________
(
not
to
stay
)
in
a
hotel
.
10
.
They
____________________
____________________
(
to
take
)
the
exam
.
